Register
Two friends are travelling downstream on a raft drifting along with the same speed as the river. At ???? = 0, Friend-1 jumps off the raft and start swimming downstream. At ???? = 30 m????????, Friend-1
130k views
1 vote
Two friends are travelling downstream on a raft drifting along with the same speed as the river. At ???? = 0, Friend-1 jumps off the raft and start swimming downstream. At ???? = 30 m????????, Friend-1 turns around and starts swimming upstream until he reaches the raft. By this time the raft has drifted 2 ????m downstream. Friend-1 swims at a constant speed relative to the river. a) Find the speed of the river. b) How does your answer to part a) depend on the Friend-1’s speed relative to the river?

User Syler
by
5.4k points

1 Answer

6 votes

Answer:

Step-by-step explanation:

The careful analysis and step by step calculation is as shown in the attachment.

b) The answer is independent on the value of V1, since we are sure that whatever value V1 takes, friend 1 will still take the same time in going away and coming back.

Two friends are travelling downstream on a raft drifting along with the same speed-example-1
User Jim Chen
by
4.7k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.1m questions

6.7m answers

Other Questions

A space shuttle is approaching the surface of the moon to land. It approaches the moons surface with an initial velocity of 28m/s and is slowing at a rate of -2m/s^2. Show all work and units for problems.
________ is a measure of the internal energy that has been absorbed or transferred from one body to another, often due to a difference in temperature.
5. What happens to the arrangement of water molecules as ice melts? A Molecules gain enough energy to escape as vapor. B Molecules release enough energy to escape as vapor. C Molecules gain enough energy
A projectline is shot from the edge of a cliff 100 m above the ground with intial speed 10 m/s at an angle 30 with the horizontal. 1) determine the time taken by the projectile motion to hit the ground
You’re on a team performing a high-magnetic-field experiment. A conducting bar carrying 4.1 kA will pass through a 1.3-m-long region containing a 12-T magnetic field, making a 60° angle with the field.
Link Copied!